半无界区域上双调和方程的D-N交替算法
[Abstract]:Based on the theory of natural boundary normalization and the idea of domain decomposition, the D-N alternating algorithm for solving biharmonic equations in semi-unbounded regions is studied in this paper. Firstly, for the biharmonic equation on half plane with grooves, by introducing an artificial boundary 螕 1, the original problem is transformed into a bounded subdomain problem and an unbounded subregion problem with a typical inner boundary. Then, based on the results of natural boundary normalization, the Dirichlet-Neumann (D-N) alternating algorithm based on natural boundary normalization is proposed. The discretization form of D-N alternating algorithm is given by using finite element discretization technique, and the convergence of the algorithm is proved. Finally, some numerical examples are given to verify the feasibility and effectiveness of the algorithm.
【学位授予单位】:南京师范大学
【学位级别】:硕士
【学位授予年份】:2015
【分类号】:O175
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